Sorry John the Jordanian and others that are trying to say that Ashkenazis were converts and are not real Jews. I'll disprove your libel in a quick simple explanation. In Judaism there are a group of people directly descended from the high priest Aaron (brother of Moses). They are called Cohens. Their genetic make up proves the link, and Cohens are found amongst Ashkenazi and Sephardi. So a Sephardi Cohen from Egypt or a Ashkenazi Cohen from Ukraine are genetically linked, which disproves your so called study. The Cohen link goes back 1000 generations or so.
Aden hotel used by Yemen goverment hit by grenade (Reuters)